EP 1480932 A4 20060517 - METHOD FOR PRODUCTION OF BETA-CRYPTOXANTHIN AND ALPHA-CRYPTOXANTHIN FROM COMMERCIALLY AVAILABLE LUTEIN
Title (en)
METHOD FOR PRODUCTION OF BETA-CRYPTOXANTHIN AND ALPHA-CRYPTOXANTHIN FROM COMMERCIALLY AVAILABLE LUTEIN
Title (de)
VERFAHREN ZUR HERSTELLUNG VON b-CRYPTOXANTHIN UND --CRYPTOXANTHIN AUS KOMMERZIELLEM LUTEIN
Title (fr)
PROCEDE DE PRODUCTION DE BETA-CRYPTOXANTHINE ET ALPHA-CRYPTOXANTHINE A PARTIR DE LUTEINE DU COMMERCE
Publication
Application
Priority
- US 0303440 W 20030206
- US 35424902 P 20020206
Abstract (en)
[origin: WO03066547A2] The present invention relates to a method of reacting (3R,3'R,6'R)-lutein with a catalytic amount of an acid to obtain a mixture of anhydroluteins, rich in anhydrolutein III, with substantially no Z-isomers being formed. The mixture is converted to (3R)-beta-cryptoxanthin (major product) and (3R,6'R)-alpha-cryptoxanthin (minor product) by reacting the anhydroluteins with borane-amine complexes (e.g. Me3N.BH3) or other hydride donors and an acid in a chlorinated solvent, preferably dichloromethane, at ambient temperature to produce (3R)-beta-cryptoxanthin and (3R,6'R)-alpha-cryptoxanthin.
IPC 1-7
IPC 8 full level
C07C 29/60 (2006.01); C07B 61/00 (2006.01); C07C 1/00 (2006.01); C07C 29/00 (2006.01); C07C 29/17 (2006.01); C07C 29/56 (2006.01); C07C 29/78 (2006.01); C07C 35/21 (2006.01); C07C 41/09 (2006.01); C07C 43/196 (2006.01); C07C 45/28 (2006.01); C07C 403/24 (2006.01)
IPC 8 main group level
C07C (2006.01)
CPC (source: EP US)
C07C 403/24 (2013.01 - EP US)
Citation (search report)
- [A] GB 1081104 A 19670831 - YISSUM RES DEV CO
- [A] GB 1427690 A 19760310 - HOFFMANN LA ROCHE
- [DA] KHACHIK, FREDERICK ET AL: "Isolation, structural elucidation, and partial synthesis of lutein dehydration products in extracts from human plasma", JOURNAL OF CHROMATOGRAPHY, B: BIOMEDICAL APPLICATIONS , 670(2), 219-33 CODEN: JCBBEP; ISSN: 0378-4347, 1995, XP002190752
- See references of WO 03066547A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03066547 A2 20030814; WO 03066547 A3 20031016; AU 2003217324 A1 20030902; AU 2003217324 B2 20080703; CA 2474646 A1 20030814; CA 2474646 C 20110426; EP 1480932 A2 20041201; EP 1480932 A4 20060517; EP 1480932 B1 20121017; JP 2005517000 A 20050609; JP 4834290 B2 20111214; US 2005119506 A1 20050602; US 7115786 B2 20061003
DOCDB simple family (application)
US 0303440 W 20030206; AU 2003217324 A 20030206; CA 2474646 A 20030206; EP 03713367 A 20030206; JP 2003565924 A 20030206; US 50349804 A 20040805